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29508e1e NH |
1 | #ifndef HTTP_H |
2 | #define HTTP_H | |
3 | ||
4 | #include "cache.h" | |
5 | ||
6 | #include <curl/curl.h> | |
7 | #include <curl/easy.h> | |
8 | ||
028c2976 | 9 | #include "strbuf.h" |
9fc6440d | 10 | #include "remote.h" |
1966d9f3 | 11 | #include "url.h" |
028c2976 | 12 | |
4f5f998f JH |
13 | /* |
14 | * We detect based on the cURL version if multi-transfer is | |
15 | * usable in this implementation and define this symbol accordingly. | |
01689909 | 16 | * This shouldn't be set by the Makefile or by the user (e.g. via CFLAGS). |
4f5f998f JH |
17 | */ |
18 | #undef USE_CURL_MULTI | |
19 | ||
9cf04301 | 20 | #if LIBCURL_VERSION_NUM >= 0x071000 |
29508e1e NH |
21 | #define USE_CURL_MULTI |
22 | #define DEFAULT_MAX_REQUESTS 5 | |
23 | #endif | |
24 | ||
25 | #if LIBCURL_VERSION_NUM < 0x070704 | |
98746061 | 26 | #define curl_global_cleanup() do { /* nothing */ } while (0) |
29508e1e NH |
27 | #endif |
28 | #if LIBCURL_VERSION_NUM < 0x070800 | |
98746061 | 29 | #define curl_global_init(a) do { /* nothing */ } while (0) |
29508e1e NH |
30 | #endif |
31 | ||
500ebb01 | 32 | #if (LIBCURL_VERSION_NUM < 0x070c04) || (LIBCURL_VERSION_NUM == 0x071000) |
29508e1e NH |
33 | #define NO_CURL_EASY_DUPHANDLE |
34 | #endif | |
35 | ||
c774b2dc AH |
36 | #if LIBCURL_VERSION_NUM < 0x070a03 |
37 | #define CURLE_HTTP_RETURNED_ERROR CURLE_HTTP_NOT_FOUND | |
38 | #endif | |
39 | ||
3944ba0c MS |
40 | #if LIBCURL_VERSION_NUM < 0x070c03 |
41 | #define NO_CURL_IOCTL | |
42 | #endif | |
43 | ||
4bc444eb MV |
44 | /* |
45 | * CURLOPT_USE_SSL was known as CURLOPT_FTP_SSL up to 7.16.4, | |
46 | * and the constants were known as CURLFTPSSL_* | |
47 | */ | |
48 | #if !defined(CURLOPT_USE_SSL) && defined(CURLOPT_FTP_SSL) | |
49 | #define CURLOPT_USE_SSL CURLOPT_FTP_SSL | |
50 | #define CURLUSESSL_TRY CURLFTPSSL_TRY | |
51 | #endif | |
52 | ||
9cba13ca | 53 | struct slot_results { |
c8568e13 NH |
54 | CURLcode curl_result; |
55 | long http_code; | |
0972ccd9 | 56 | long auth_avail; |
372370f1 | 57 | long http_connectcode; |
c8568e13 NH |
58 | }; |
59 | ||
9cba13ca | 60 | struct active_request_slot { |
29508e1e | 61 | CURL *curl; |
29508e1e NH |
62 | int in_use; |
63 | CURLcode curl_result; | |
64 | long http_code; | |
baa7b67d | 65 | int *finished; |
c8568e13 | 66 | struct slot_results *results; |
29508e1e NH |
67 | void *callback_data; |
68 | void (*callback_func)(void *data); | |
69 | struct active_request_slot *next; | |
70 | }; | |
71 | ||
9cba13ca | 72 | struct buffer { |
028c2976 MH |
73 | struct strbuf buf; |
74 | size_t posn; | |
29508e1e NH |
75 | }; |
76 | ||
77 | /* Curl request read/write callbacks */ | |
a04ff3ec DM |
78 | extern size_t fread_buffer(char *ptr, size_t eltsize, size_t nmemb, void *strbuf); |
79 | extern size_t fwrite_buffer(char *ptr, size_t eltsize, size_t nmemb, void *strbuf); | |
80 | extern size_t fwrite_null(char *ptr, size_t eltsize, size_t nmemb, void *strbuf); | |
3944ba0c MS |
81 | #ifndef NO_CURL_IOCTL |
82 | extern curlioerr ioctl_buffer(CURL *handle, int cmd, void *clientp); | |
83 | #endif | |
29508e1e NH |
84 | |
85 | /* Slot lifecycle functions */ | |
86 | extern struct active_request_slot *get_active_slot(void); | |
87 | extern int start_active_slot(struct active_request_slot *slot); | |
88 | extern void run_active_slot(struct active_request_slot *slot); | |
89 | extern void finish_all_active_slots(void); | |
90 | ||
beed336c JK |
91 | /* |
92 | * This will run one slot to completion in a blocking manner, similar to how | |
93 | * curl_easy_perform would work (but we don't want to use that, because | |
94 | * we do not want to intermingle calls to curl_multi and curl_easy). | |
95 | * | |
96 | */ | |
97 | int run_one_slot(struct active_request_slot *slot, | |
98 | struct slot_results *results); | |
99 | ||
29508e1e NH |
100 | #ifdef USE_CURL_MULTI |
101 | extern void fill_active_slots(void); | |
fc57b6aa | 102 | extern void add_fill_function(void *data, int (*fill)(void *)); |
29508e1e NH |
103 | extern void step_active_slots(void); |
104 | #endif | |
105 | ||
a4ddbc33 JK |
106 | extern void http_init(struct remote *remote, const char *url, |
107 | int proactive_auth); | |
29508e1e | 108 | extern void http_cleanup(void); |
8cb01e2f | 109 | extern struct curl_slist *http_copy_default_headers(void); |
29508e1e | 110 | |
c915f11e | 111 | extern long int git_curl_ipresolve; |
29508e1e | 112 | extern int active_requests; |
e9176745 | 113 | extern int http_is_verbose; |
de1a2fdd | 114 | extern size_t http_post_buffer; |
2501aff8 | 115 | extern struct credential http_auth; |
29508e1e | 116 | |
29508e1e NH |
117 | extern char curl_errorstr[CURL_ERROR_SIZE]; |
118 | ||
e8dc37e0 MH |
119 | static inline int missing__target(int code, int result) |
120 | { | |
121 | return /* file:// URL -- do we ever use one??? */ | |
122 | (result == CURLE_FILE_COULDNT_READ_FILE) || | |
123 | /* http:// and https:// URL */ | |
124 | (code == 404 && result == CURLE_HTTP_RETURNED_ERROR) || | |
125 | /* ftp:// URL */ | |
126 | (code == 550 && result == CURLE_FTP_COULDNT_RETR_FILE) | |
127 | ; | |
128 | } | |
129 | ||
130 | #define missing_target(a) missing__target((a)->http_code, (a)->curl_result) | |
131 | ||
5424bc55 TRC |
132 | /* Helpers for modifying and creating URLs */ |
133 | extern void append_remote_object_url(struct strbuf *buf, const char *url, | |
134 | const char *hex, | |
135 | int only_two_digit_prefix); | |
136 | extern char *get_remote_object_url(const char *url, const char *hex, | |
137 | int only_two_digit_prefix); | |
138 | ||
1bbcc224 JK |
139 | /* Options for http_get_*() */ |
140 | struct http_get_options { | |
141 | unsigned no_cache:1, | |
142 | keep_error:1; | |
e929cd20 | 143 | |
1bbcc224 JK |
144 | /* If non-NULL, returns the content-type of the response. */ |
145 | struct strbuf *content_type; | |
78868962 | 146 | |
e3131626 JK |
147 | /* |
148 | * If non-NULL, and content_type above is non-NULL, returns | |
149 | * the charset parameter from the content-type. If none is | |
150 | * present, returns an empty string. | |
151 | */ | |
152 | struct strbuf *charset; | |
153 | ||
78868962 JK |
154 | /* |
155 | * If non-NULL, returns the URL we ended up at, including any | |
156 | * redirects we followed. | |
157 | */ | |
158 | struct strbuf *effective_url; | |
c93c92f3 JK |
159 | |
160 | /* | |
161 | * If both base_url and effective_url are non-NULL, the base URL will | |
162 | * be munged to reflect any redirections going from the requested url | |
163 | * to effective_url. See the definition of update_url_from_redirect | |
164 | * for details. | |
165 | */ | |
166 | struct strbuf *base_url; | |
1bbcc224 JK |
167 | }; |
168 | ||
169 | /* Return values for http_get_*() */ | |
e929cd20 MH |
170 | #define HTTP_OK 0 |
171 | #define HTTP_MISSING_TARGET 1 | |
172 | #define HTTP_ERROR 2 | |
173 | #define HTTP_START_FAILED 3 | |
42653c09 SC |
174 | #define HTTP_REAUTH 4 |
175 | #define HTTP_NOAUTH 5 | |
e929cd20 MH |
176 | |
177 | /* | |
a7793a74 | 178 | * Requests a URL and stores the result in a strbuf. |
e929cd20 MH |
179 | * |
180 | * If the result pointer is NULL, a HTTP HEAD request is made instead of GET. | |
181 | */ | |
1bbcc224 | 182 | int http_get_strbuf(const char *url, struct strbuf *result, struct http_get_options *options); |
e929cd20 | 183 | |
c13b2633 | 184 | extern int http_fetch_ref(const char *base, struct ref *ref); |
d7e92806 | 185 | |
b8caac2b TRC |
186 | /* Helpers for fetching packs */ |
187 | extern int http_get_info_packs(const char *base_url, | |
188 | struct packed_git **packs_head); | |
189 | ||
9cba13ca | 190 | struct http_pack_request { |
2264dfa5 TRC |
191 | char *url; |
192 | struct packed_git *target; | |
193 | struct packed_git **lst; | |
194 | FILE *packfile; | |
2264dfa5 | 195 | char tmpfile[PATH_MAX]; |
2264dfa5 TRC |
196 | struct active_request_slot *slot; |
197 | }; | |
198 | ||
199 | extern struct http_pack_request *new_http_pack_request( | |
200 | struct packed_git *target, const char *base_url); | |
201 | extern int finish_http_pack_request(struct http_pack_request *preq); | |
202 | extern void release_http_pack_request(struct http_pack_request *preq); | |
203 | ||
5424bc55 | 204 | /* Helpers for fetching object */ |
9cba13ca | 205 | struct http_object_request { |
5424bc55 | 206 | char *url; |
5424bc55 TRC |
207 | char tmpfile[PATH_MAX]; |
208 | int localfile; | |
209 | CURLcode curl_result; | |
210 | char errorstr[CURL_ERROR_SIZE]; | |
211 | long http_code; | |
212 | unsigned char sha1[20]; | |
213 | unsigned char real_sha1[20]; | |
214 | git_SHA_CTX c; | |
ef49a7a0 | 215 | git_zstream stream; |
5424bc55 TRC |
216 | int zret; |
217 | int rename; | |
218 | struct active_request_slot *slot; | |
219 | }; | |
220 | ||
221 | extern struct http_object_request *new_http_object_request( | |
222 | const char *base_url, unsigned char *sha1); | |
223 | extern void process_http_object_request(struct http_object_request *freq); | |
224 | extern int finish_http_object_request(struct http_object_request *freq); | |
225 | extern void abort_http_object_request(struct http_object_request *freq); | |
226 | extern void release_http_object_request(struct http_object_request *freq); | |
227 | ||
74c682d3 EP |
228 | /* setup routine for curl_easy_setopt CURLOPT_DEBUGFUNCTION */ |
229 | void setup_curl_trace(CURL *handle); | |
29508e1e | 230 | #endif /* HTTP_H */ |